Reinforcing rod support



W66 W. J. CARROLL. 33%,378

REINFORCING ROD SUPPORT Original Filed April 5, 1960 2 1 99Y' "S1'l@8't1 Al Mil W u WIN Ml 1 '0 I j I l I /7 /0 /4 1 0 /7 ,5 .n fl /63F. 5JNVENTOR.

WILLIAM JAY CARROLL tail-"i; BY m j 7 i Mai-Q hig ATTORNEYS w. J.CARROLL 3,2937% REINFORCING ROD SUPPORT Original Filed April 5, 1960 2Sheets-Sheet 2 IN VEN TOR. WILLIAM JAY CARROLL his ATTORNEYS 3,289,378Patented Dec. 6, 1966 Arr 3,289,378 REINFORCING R01) SUPPORT William JayCarroll, Harbor Road, Sands Point, N.Y. Continuation of application Ser.No. 20,102, Apr. 5, 1960. This application Feb. 10, 1964, Ser. No.344,526 3 Claims. (Cl. 52688) This application is a continuation of mycopendin-g United States application Serial No. 20,102 filed April 5,1960 and now abandoned.

The present invention relates to reinforcing means for use with pouredconcrete and other plastic substances, and, more particularly, to noveland improved support members for reinforcing rods.

Slab bar bolsters, individual high chairs and continuous high chairs arewell known and extensively used in the field of reinforced concrete forsupporting reinforcing bars at predetermined levels. These supportingmembers are usually made of various configurations of heavy gauge wire.A wooden form is laid out in which the reinforcing concrete is to bepoured. The supporting members are set out on top of the wooden formboards, and the reinforcing bars are laid across the supporting membersand are tied thereto at the various intersections. After this is done,the concrete or other plastic material is poured into the form, the woodform being subsequently removed after sufiicient hardening of theconcrete or other plastic material.

In the case of reinforced concrete ceilings, the ceiling is eitherpainted or plaster is applied to the concrete surface either directly orafter an intermediate grinding step following the stripping away of theform boards. Since the middle reinforcing rod supporting members resteddirectly on the wood forms during the pouring operation, there is atleast point contact of the metal support members with the outer surfaceof the concrete. Therefore, even if the metal support members are formedof galvanized metal, more often than not their unprotected metalsurfaces are susceptible of rust and corrosion, either as a result ofthe grinding operation or through the general construction activities.

The resultant rust bleeds through any subsequent coat of plaster orpaint that may be applied often requiring replas'tering or completeredoing of the ceiling structure.

It is customary to attempt to prevent this form of rust bleed bypainting any metal surfaces appearing at the surface of the reinforcedconcrete with shellac or some similar substance. This is atime-consuming operation and unfortunately is usually not performed in avery reliable fashion.

In accordance with the invention, there is provided in combination withwhat otherwise may be conventional reinforcing rod supporting means,such as slab bar bolsters, individual high chairs, continuous highchairs, etc., nonmetallic contact members adapted to be attached tothose portions of the bottom legs of the supporting members, which wouldotherwise be in contact with the wood form. The principal requirementswith respect to these nonmetallic contact members is that they willwithstand compression produced by the weight of the construction workersand the materials which may bear upon them, that they not be susceptibleof rust or corrosion, and that there be a minimum contact between thecontact members and the pouring forms.

For a more complete understanding of the invention, reference may be hadto the following detailed description taken in conjunction with theaccompanying figures of the drawings, in which:

FIGURE 1 is a perspective view of a continuous high chair reinforcingrod supporting means in combination with contact members, in accordancewith the invention;

FIG. 2 is a partial plane view of a pouring form in which reinforcingrod supporting means and reinforcing rods have been set and tied;

FIG. 3 is a partial cross-sectional View of the pouring form of FIG. 2taken along the line 33 and looking in the direction of the arrows,after concrete had been poured into the form;

FIG. 4 is a perspective view of a novel form of individual high chair,in accordance with the invention;

FIG. 5 is a perspective view of a novel form of slab bar bolster,partially broken away to show the configuration of the leg members ofthe slab bar bolster, in accordance with the invention; and

FIG. 6 is a perspective view of a contact member suitable forcombination with reinforcing rod supporting means, in accordance withthe invention.

In the case of the continuous high chair type supporting device 10 ofFIGS. 1, 2 and 3 which constitutes a preformed unitary support means, ahorizontal transverse supporting bar 11 is soldered, welded or otherwisesuitably fastened to the supporting legs 12, which may have any suitableconfiguration but normally have ends 13 which either are adapted to behorizontally disposed continuous with the wood form boards 14 on whichthey are rested, or, in the case of conventional types :now in use,upturned so as to present a minimal point contact with the form boards14. However, in accordance with the invention, the ends 13 of the legs12 are adapted to be horizontally disposed and lie within a channel in anonmetallic contact member 15, shown in greater detail in FIG. 6.

The contact member 15, which will be formed of any suitable plasticmaterial, such as polyethylene, for example, having sufficient strengthcharacteristics to withstand compression which might be placed on it bymeans of the Weight of the construction workmen or the constructionmaterials passing over or laid on the reinforcing rods before theconcrete or other plastic material is poured into the form. The contactmembers 15 may take any suitable form, however, in the preferredembodiment of the invention, the contact member 15 is: cylindrical withan open eccentric channel 16 running longitudinally therewith. It isobvious that a contact member of this type may be either individuallyfabricated or may be fabricated in the form of an elongated plasticextrusion which can be divided into appropriate lengths in any suitablemanner.

One of the principal criterions in the construction and form of thecontact member 15, is that it provides a minimum contact with anysurface upon which it is rested, such as the form boards 14.

After the wood form 14 is constructed, the reinforcing bar supportingmeans 10 are placed on the form boards 1 in spaced-apart parallelrelation, usually at a distance of 4 feet. Conventional reinforcing bars17 are then laid transversely across the bars 11 on each of thesupporting means 10. In accordance with customary construction codes,each intersection of the reinforcing bar 17 and the horizontal bar 11 ofthe supporting means 10 must then be tied with suitable tie wires.Construction codes also usually require that there be minimum clearancebetween the reinforcing bar 17 and the form boards 14, e.-g. of an inch.

If it is desired to include more than one layer of reinforcing bars inan especially thick concrete floor or ceiling, for example, higher levelcontinuous high chairs or individual high chair type supporting means 20(FIG. 4), for example, might be placed on the form boards 14 in spacesintermediate the reinforcing bars 17 and horizontal bars 11 of thesupporting means 10. The rest point 21 0f the individual high chair typesupporting means 20 would be at a level above that of the horizontalbars 11. In so far as the contact members 15a on the legs of theindividual high chair type of supporting means 20 and concerned, theymay be either identical with or substantially similar to the contactmember 15 shown in FIG. 6.

In practice, the lower reinforcing rods in a concrete form, which are tobe spaced the minimum clearance of of an inch from the form boards, arecustomarily supported by a supporting means of a conventional typecalled a slab bar bolster, which may have a configuration similar to thesupporting means 10 of FIG. 1 without the contact members 15. In view ofthe small space in which the slab bar 'bolster supporting means must beplaced, a construction such as that shown in FIG. 5 is used, inaccordance with the invention. In FIG. 5, a slab bar bolster typesupporting means 30 having a horizontal transverse bar 31, includessubstantially straight legs 32, which are adapted to lie forsubstantially their entire extent in the open channel 16 of the plasticcontact member 151;.

After the form is constructed in the manner shown in FIG. 2, structuralconcrete is poured into the form over and around the various describedreinforcing and supporting members. When the concrete has hardened, theform is stripped, and thereis provided, in accordance with theinvention, a structural arrangement in which plaster may be applieddirectly to the surface of the reinforced concrete or the surface may beground without any chance of contacting metal reinforcing members orsupport means. Thus there is provided novel and unobvious means foreliminating the customary problems incident to rust bleed fromreinforcing elements.

It will be understood by those skilled in the art that the abovedescribed embodiments are meant to be merely exemplary and that they aresusceptible of modification and variation without departing from thespirit and scope of the invention. Therefore, it is deemed that theinvention is not to be limited except as defined in the appended claims.

I claim:

1. A supporting device for supporting elongated reinforcing members at apredetermined distance above a removable surface serving as a form forthe fabrication of a reinforced structure of hardenable constructionmaterial such as concrete, the reinforcing members and the supportdevice being adapted to be embedded in and constitute a permanent partof the reinforced structure, comprising a preformed unitary supportmeans including a longitudinally extending metallic support rod adaptedto support at least one reinforcing member at at least one point ofcontact at a first predetermined distance above the removable surfaceand a plurality of spaced-apart transversely extending rigid metallicrods, each of said transversely extending rods being fixedly attachedand in rigid relation to said support rod prior to fabrication of thereinforced structure at a point preestablished fixed distances alongsaid longitudinally extending support rod from the points of attachmentof others of said transversely extending rods and having a plurality ofopposite ends extending from said longitudinally extending support rodfor supporting said support rod relative to the removable surface, andindividual preformed nonmetallic plastic contact members ofpredetermined configuration capable of withstanding compression duringfabrication of the reinforced structure mounted on and having a channelformed therein of fixed predetermined dimensions with predeterminedfixed spacings relative to the exterior of said respective member forfixedly receiving after fabrication a respective opposite end of one ofsaid plurality of rods, each of said contact members supporting arespective one of said opposite ends of said plurality of transverserods a second predetermined distance above the removable surface.

2. A reinforcing means adapted to be embedded in and constitute apermanent part of a reinforced structure of hardenable constructionmaterial such as concrete, comprising a preformed unitary support meansincluding a longitudinally extending metallic member adapted to bepositioned a first predetermined distance above a removable surfaceserving as a form for the fabrication of the reinforced structure and aplurality of spaced-apart transversely extending rigid metallic rods,each of said transversely extending rods being fixedly attached and inrigid relation to said member prior to fabrication of the reinforcedstructure at a point preestablished fixed distances along saidlongitudinally extending member from the points of attachment of othersof said transversely extending rods and having a plurality of oppositeends extending from said longitudinally extending member for supportingsaid member relative to the removable surface, and individual preformednonmetallic plastic contact members of predetermined configurationcapable of withstanding compression during fabrication of the reinforcedstructure mounted on and having a channel formed therein of fixedpredetermined dimensions with predetermined fixed spacings relative tothe exterior of said respective member for fixedly receiving afterfabrication a respective opposite end of one of said plurality of rodsfor supporting each of said opposite ends of said plurality oftransverse rods 21 second predetermined distance above the removablesurface.

3. A supporting device for supporting an elongated reinforcing member ata predetermined distance above a removable surface serving as a form forthe fabrication of a reinforced structure of hardenable constructionmaterial such as concrete, the reinforcing member and the supportingdevice being adapted to be embedded in and constitute a permanent partof the reinforced structure, comprising a preformed unitary metallicsupport means adapted to support a reinforcing member a firstpredetermined distance above the removable sur-face, said metallicsupport means including at least a plurality of transversely extendingrods in relatively rigid relation each having a plurality of oppositeends extending from said support means for supporting said support meansrelative to the removable surface, and individual preformed nonmetallicplastic contact members of predetermined configuration capable ofwithstanding compression during fabrication of the reinforced structuremounted on and having a channel formed therein of fixed predetermineddimensions with predetermined fixed spacings relative to the exterior ofsaid respective member for fixedly receiving after fabrication arespective opposite end of one of said plurality of rods, each of saidcontact members supporting a respective one of said opposite ends ofsaid plurality of transverse rods a second predetermined distance abovethe removable surface.

References Cited by the Examiner UNITED STATES PATENTS 1,178,939 4/1916ODonnell 52-688 1,457,610 6/1923 White 52688 1,659,795 2/192'8 White52684 1,769,465 7/1930 Rippstein 52-688 1,850,400 3/1932 Lampert 52-6882,281,946 5/ 1942 ONeill 52-678 2,349,399 5/1944 Awbrey 52686 2,754,6747/1956 Malsbury 52723 FOREIGN PATENTS 1,229,466 3/1960 France.

876,459 5/ 1953 Germany.

688,989 3/1953 Great Britain.

715,563 9/ 1954 Great Britain.

FRANK L. ABBOTT, Primary Examiner.

JACOB L. NACKENOF F CHARLES E. OCONNELL Examiners.

I. L. RIDGILL, Assistant Examiner.

1. A SUPPORTING DEVICE FOR SUPORTING ELONGATED REINFORCING MEMBERS AT APREDETERMINED DISTANCE ABOVE A REMOVABLE SURFACE SERVING AS A FORM FORTHE FABRICATION OF A REINFORCED STRUCTURE OF HARDENABLE CONSTRUCTIONMATERIAL SUCH AS CONCRETE, THE REINFOCING MEMBERS, AND THE SUPPORTDEVICE BEING ADAPTED TO BE EMBEDDED IN SAND CONSTITUTE A PERMANENT PARTOF THE REINFORCED STRUCTURE, COMPRISING A PREFORMED UNITARY SUPPORTMEANS INCLUDING A LONGITUDINALLY EXTENDING METALLIC SUPPORT ROD ADAPTEDTO SUPPORT AT LEAST ONE REINFORCING MEMBER AT AT LEAST ONE POINT OFCONTACT AT A FIRST PREDETERMINED DISTANCE ABOVE THE REMOVABLE SURFACEAND A PLURALITY OF SPACED-APART TRANSVERSELY EXTENDING RIGID METALLICRODS, EAHC OF SAID TRANSVERSELY EXTENDING RODS BEING FIXEDLY ATTACHEDAND IN RIGID RELATION TO SAID SUPPORT AT A POINT PREESTABLISHED OF THEREINFORCED STRUCTURE AT A POINT PREESTABLISHED FIXED DISTANCES ALONGSAID LONGITUDINALLY EXTENDING SUPPORT ROD FROM THE POINTS OF ATTACHMENTOF OTHERS OF SAID TRANS-